Underwater pool cleaning apparatus



FIG. 1 is a perspective view of an underwater pool cleaning apparatus showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view, the right side being identical in appearance thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken line showing of a suction base is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an underwater pool cleaning apparatus, as shown and described. 